AKG C391 B High Performance Condenser Microphone
The AKG C391 B is a compact cardioid condenser engineered for pristine vocal tracking, acoustic instrument recording, and drum mic’ing. Its lightweight, ergonomic design—just 115 grams and 146 mm in length—fits seamlessly into fixed studio setups or mobile session work. The microphone captures transparent, detailed audio with excellent off-axis rejection, rewarding disciplined mic technique with honest, studio-grade recordings that translate across playback systems.
Recording & Mix Integration
A flat 20–20,000 Hz frequency response ensures accurate tonal capture with no colored character obscuring source detail, while the 77 dB-A signal-to-noise ratio and 17 dB-A equivalent noise level keep the noise floor low during tracking and overdubs. Maximum SPL handling of 132 dB (1% T.H.D.) or 142 dB with the 10 dB pad engaged provides sufficient headroom for close-mic’ing loud sources without saturation or unwanted distortion artifacts.
Studio Control & Workflow
The cardioid polar pattern delivers controlled source isolation and natural rejection of room reflections and off-axis leakage, essential for capturing clean, focused takes in untreated or mixed-purpose spaces. A switchable 10 dB preattenuation pad and 12 dB/octave high-pass filter below 75 Hz eliminate stage-time parameter hunting, while the modular capsule system enables future sonic customization. Balanced XLR 3-pin connection with 9–52 V phantom power compatibility integrates directly into standard professional recording chains and interfaces.
Key Features
- Cardioid condenser microphone with precise directional pickup
- Frequency range: 20–20,000 Hz
- Sensitivity: 10 mV/Pa
- Maximum SPL: 132 dB (1% T.H.D.) / 142 dB with pad engaged
- Signal-to-noise ratio: 77 dB-A
- Equivalent noise level: 17 dB-A
- Switchable 10 dB preattenuation pad
- Switchable 12 dB/octave high-pass filter (below 75 Hz)
- Phantom power: 9–52 V, 2 mA current draw
- Balanced XLR male 3-pin connection; 200 ohm impedance
- Compact dimensions: 19 mm diameter × 146 mm length; 115 g weight
- Modular design with interchangeable capsule system
The C391 B combines precision engineering with session-ready flexibility, delivering the transparent, artifact-free sound that professional recording and studio production demand.
